Researchers have found a way to protect very fragile quantum systems

Researchers from the University of Cambridge have found that quanta can remain inextricably linked

or confused, even if there are occasional breaks between them. They discovered that this effect can be achieved by using symmetry in quantum systems.

Quantum systems are built thanks to a specialbehavior of particles at the atomic level: these systems can be used in computers to perform ultra-fast calculations. While a regular computer bit is an electrical switch that can be set to one or zero, a quantum bit or qubit can be both a one and a zero at the same time. 

However, qubits are extremely finicky, so the slightest noise in their environment can lead to rupture and entanglement, noted Dr. Showan Dutta of the Cambridge Cavendish Laboratory, the first author of the paper.

A group of researchers figured out how to solve thisproblem: they modeled the atomic system as a lattice in which the atoms are close to each other. The authors found that if the noise did not affect the particles on the left and right sides. This amazing property was achieved thanks to a special type of symmetry that keeps all pairs together. 

This discovery, the researchers believe, will form the basis of ultrafast quantum computers.

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